US4376231A - Communication cable sealed with a re-enterable sealing tape - Google Patents
Communication cable sealed with a re-enterable sealing tape Download PDFInfo
- Publication number
- US4376231A US4376231A US06/295,006 US29500681A US4376231A US 4376231 A US4376231 A US 4376231A US 29500681 A US29500681 A US 29500681A US 4376231 A US4376231 A US 4376231A
- Authority
- US
- United States
- Prior art keywords
- cable
- tape
- splice
- closure
- sealed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000007789 sealing Methods 0.000 title claims abstract description 19
- 229920000800 acrylic rubber Polymers 0.000 claims abstract description 9
- 229920000058 polyacrylate Polymers 0.000 claims abstract description 9
- 229920002367 Polyisobutene Polymers 0.000 claims description 8
- 239000004615 ingredient Substances 0.000 claims description 7
- 239000006229 carbon black Substances 0.000 claims description 6
- 239000000945 filler Substances 0.000 claims description 5
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 claims description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 2
- 230000013011 mating Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 150000001875 compounds Chemical class 0.000 abstract description 10
- 239000000203 mixture Substances 0.000 abstract description 9
- 239000002904 solvent Substances 0.000 abstract description 2
- 239000003566 sealing material Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 229920013646 Hycar Polymers 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 3
- 235000021317 phosphate Nutrition 0.000 description 3
- 239000005060 rubber Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- -1 aryl phosphates Chemical class 0.000 description 2
- JJXNVYMIYBNZQX-UHFFFAOYSA-N diphenyl (2-propan-2-ylphenyl) phosphate Chemical compound CC(C)C1=CC=CC=C1OP(=O)(OC=1C=CC=CC=1)OC1=CC=CC=C1 JJXNVYMIYBNZQX-UHFFFAOYSA-N 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 230000009477 glass transition Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- DMYOHQBLOZMDLP-UHFFFAOYSA-N 1-[2-(2-hydroxy-3-piperidin-1-ylpropoxy)phenyl]-3-phenylpropan-1-one Chemical compound C1CCCCN1CC(O)COC1=CC=CC=C1C(=O)CCC1=CC=CC=C1 DMYOHQBLOZMDLP-UHFFFAOYSA-N 0.000 description 1
- YEVQZPWSVWZAOB-UHFFFAOYSA-N 2-(bromomethyl)-1-iodo-4-(trifluoromethyl)benzene Chemical compound FC(F)(F)C1=CC=C(I)C(CBr)=C1 YEVQZPWSVWZAOB-UHFFFAOYSA-N 0.000 description 1
- 229910001018 Cast iron Inorganic materials 0.000 description 1
- 229920001079 Thiokol (polymer) Polymers 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- VCNTUJWBXWAWEJ-UHFFFAOYSA-J aluminum;sodium;dicarbonate Chemical compound [Na+].[Al+3].[O-]C([O-])=O.[O-]C([O-])=O VCNTUJWBXWAWEJ-UHFFFAOYSA-J 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- 229920005549 butyl rubber Polymers 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 229910001647 dawsonite Inorganic materials 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000008393 encapsulating agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 229910000476 molybdenum oxide Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- PQQKPALAQIIWST-UHFFFAOYSA-N oxomolybdenum Chemical compound [Mo]=O PQQKPALAQIIWST-UHFFFAOYSA-N 0.000 description 1
- 239000003348 petrochemical agent Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000454 talc Substances 0.000 description 1
- 229910052623 talc Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000004684 trihydrates Chemical class 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G15/00—Cable fittings
- H02G15/08—Cable junctions
- H02G15/10—Cable junctions protected by boxes, e.g. by distribution, connection or junction boxes
- H02G15/113—Boxes split longitudinally in main cable direction
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2927—Rod, strand, filament or fiber including structurally defined particulate matter
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
- Y10T428/2958—Metal or metal compound in coating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
- Y10T428/2913—Rod, strand, filament or fiber
- Y10T428/2933—Coated or with bond, impregnation or core
- Y10T428/294—Coated or with bond, impregnation or core including metal or compound thereof [excluding glass, ceramic and asbestos]
- Y10T428/296—Rubber, cellulosic or silicic material in coating
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
An improved, solvent-resistant sealing compound is described. It is an acrylic rubber composition adapted particularly for sealing splice case closures around telecommunications cable.
Description
This is a continuation of application Ser. No. 111,907, filed Jan. 14, 1980 and now abandoned.
Rubber compounds have been used in a variety of applications as sealing materials and are used prominently in the communications industry to provide gas tight seals in waterproof cables. In particular, cable splices enclosed with splice closures need to be sealed where the splice closure halves are joined and where the closure is joined to the ends of the cables being spliced. If the cable is pressurized the joint should be gas tight.
Rubber sealing compounds are available for this and related applications. However, the sealing compound that is conventionally used for sealing telecommunications cable softens on exposure to petrochemicals, with attendant loss of gas pressure. Water intrusion then destroys the electrical performance of the cable. Similarly, this sealing compound is affected by the grease contained in the waterproof cable, and also by the encapsulant used conventionally to fill the splice closure to prevent water entry.
In these cases, when the sealing material dissolves, it not only ceases to function as a seal, but it seeps into the splice closure, interfering with later reentry of the splice for service modifications or repair.
Other qualities of a desirable sealing material for this and related applications are low flame spread and low electrical conductivity.
We have devised a new sealing compound with the foregoing as design objectives. It is an acrylic rubber composition specifically formulated for sealing splice closures around telecommunications cable.
The FIGURE is a perspective representation of a splice between ends of a telecommunications cable, showing a splice closure sealed along the closure halves and to the cable with a sealing tape.
The sealing compound according to the invention is a modified acrylic rubber having the following composition:
TABLE 1
______________________________________
Parts by Weight
Ingredient Min. Preferred
Max.
______________________________________
Acrylic rubber
22 24.7 27
Polyisobutylene
7 8.7 10.5
Carbon black 5 10.0 11
Tricresyl phosphate
10 12.0 14
Hydrated alumina
40 44.6 50
______________________________________
The acrylic rubber is resistant to petrochemical solvents. Specific materials suitable for this ingredient are T-76, produced by Thiokol Chemical Corp., Hycar 4043, Hycar 4054, and Hycar 4054-x-2 available from B. F. Goodrich Corp. Hycar 4054 and Hycar 4054-x-2 are especially suitable since they exhibit a glass transition temperature below the temperature range to which telecommunications cable is normally exposed in service. As a preferred case therefore, the rubber ingredient advantageously has a glass transition temperature below -20 degrees C. An acrylic rubber without the crosslinking agent conventionally present in the material would be satisfactory.
The polyisobutylene (PIB) is included for tack control, and in our composition is Vistanex LM-MH, available from Exxon Chemical Corp. Vistanex LM-MS and other PIB will be suitable, as well as butyl rubber.
The hydrated alumina is included as a flame retardant filler. The specific material used is Lubral Coated H-710, available from ALCOA Chemicals. In general, any nonconductive, fine particle filler may be used but accompanied by some loss of fire retardancy. Typical substitutes include CaCO3, silica, Dawsonite (a flame retardant filler), titania, zirconia, molybdenum oxide, iron oxide, antimony oxide, talc.
The tricresyl phosphate used is Kronitex TCP, available from FMC Corp. This ingredient is a compatibilizer, essentially insoluble in hydrocarbons, included to control syneresis of the polyisobutylene ingredient. Other aryl phosphates or triaryl phosphates such as kronitex 100 (FMC) are suitable. Aliphatic phosphates such as trioctyl phosphate are soluble and are therefore less acceptable. We have also used chlorinated paraffin oils to control syneresis in these materials, or to replace part of the PIB for tack control and syneresis.
Carbon black is an effective extrusion aid for processing the material into cord or tape. It adds smoothness, uniformity and gloss. It also adds to the uv stability characteristics of acrylic rubbers.
The particular application for which this sealing material was designed is represented in the FIGURE. Two ends of a telephone cable, 10 and 11, are shown spliced together with a splice closure 12. The multipairs of individual wires are joined together inside the closure. The closure typically consists of two halves, 13 and 14, joined together at 15, and fastened with an appropriate fastener 16. The end portion of the closure 17 is fitted to the cable end as shown. This portion, and the seam 15, are sealed with a sealing material 18 to give a water-tight, or gas-tight seal as described earlier. The closure may be filled with a splice closure filling compound to aid in preventing intrusion of water into the closure. The sealing material 18 is typically applied in the form of a cord and tape, along the closure halves and wound around the cable end, as shown, with the halves of the closure and cable ends fitted and fastened together. The sealing cord and tape are made from a compound having the composition described herein.
To demonstrate the effectiveness of this sealing compond, cast iron, aluminum, and plastic splice cases were sealed at room temperature and cycled 100 times from -40 degrees F. to +140 degrees F. without failure of the seal. The splice case was reentered, resealed, and recycled as before, again without failure.
To test the low temperature sealing properties of the material, the compound itself and the plastic closure were cooled to 30 degrees F. The seal was made and tested for 100 cycles as before. The closure remained airtight.
In other experiments the material was used successfully for watertight seals.
Whereas the specific demonstrations of the effectiveness of the sealing material are related to cable technology, other applications exist which require sealing materials with these desirable characteristics. All those which take advantage of the teachings through which this invention has advanced the art are within the scope of this invention. Although, in a broad sense, the invention is directed to a sealing composition, per se, it should be pointed out that the composition can be formed advantageously into a cord or tape. The cord or tape has desirable handling characteristics and shelf life. The composition also has an extended life in service, and is designed to maintain a sealing function for a period in excess of ten years under outdoor conditions.
It should also be understood that, while the particular embodiment described in connection with the FIGURE makes reference to telephone cable, the invention is applicable to communications cable of various kinds, including light-guide cable. However, as just mentioned, in a broader aspect the invention is directed to a sealing material, per se, used wherever the particular properties described prove advantageous.
With the use of a filler such as aluminia trihydrate, while at the same time minimizing the amount of carbon black, two other objectives are attained. The formulation will exhibit low conductivity (minimizing the carbon black) and flame retardancy (maximizing the alumina hydrate content). The material properties attained meet the criteria presently set for the outside telephone plant (volume resistivity>108 ohm cm) and new equipment building standards (OI>28).
Various additional modifications and extensions of this invention will become apparent to those skilled in the art. All such variations and deviations which basically rely on the teachings through which this invention has advanced the art are properly considered to be within the spirit and scope of this invention.
Claims (3)
1. A communications cable comprising two cable ends joined together to form a splice, and an airtight cable splice closure covering the splice and sealed to the two ends of the cable with a sealing cord or tape, with said closure comprising mating portions joined together at a re-enterable and re-sealable seam sealed with said sealing cord or tape, said cord or tape comprising the following ingredients in the approximate amounts indicated:
______________________________________
Range
Parts by Weight
Min. Max.
______________________________________
Acrylic rubber 22 27
Polyisobutylene 7 10.5
Carbon black 5 11
Tricresyl phosphate or
10 14
chlorinated paraffin
Nonconductive, fine 40 50
particle filler
______________________________________
2. The cable of claim 1 wherein the seam sealed by said sealing cord or tape remains airtight when said cable splice closure is sealed at room temperature or at 30 degrees F. and cycled 100 times from -40 degrees F. to +140 degrees F.
3. The cable of claim 1 wherein said ingredients are:
______________________________________
Parts by Weight
______________________________________
Acrylic rubber 24.7
Polyisobutylene 8.7
Hydrated alumina
44.6
Tricresyl phosphate
12.0
Carbon black 10.0
______________________________________
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US06/295,006 US4376231A (en) | 1980-01-14 | 1981-08-21 | Communication cable sealed with a re-enterable sealing tape |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11190780A | 1980-01-14 | 1980-01-14 | |
| US06/295,006 US4376231A (en) | 1980-01-14 | 1981-08-21 | Communication cable sealed with a re-enterable sealing tape |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US11190780A Continuation | 1980-01-14 | 1980-01-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US4376231A true US4376231A (en) | 1983-03-08 |
Family
ID=26809367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US06/295,006 Expired - Lifetime US4376231A (en) | 1980-01-14 | 1981-08-21 | Communication cable sealed with a re-enterable sealing tape |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US4376231A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538021A (en) * | 1984-04-06 | 1985-08-27 | At&T Bell Laboratories, Inc. | Cable closure having asymmetrical end plate assembly |
| US4558174A (en) * | 1984-04-06 | 1985-12-10 | At&T Bell Laboratories | Cable closure |
| US4647719A (en) * | 1985-06-21 | 1987-03-03 | At&T Technologies, Inc. | Termination closure for buried service cables and methods of installing |
| US5869197A (en) * | 1992-12-16 | 1999-02-09 | Nok Corporation | Acrylic rubber composition |
| EP0959537A1 (en) * | 1998-05-18 | 1999-11-24 | Andrew A.G. | Weather-proofing method and apparatus for components such as cable connectors |
| US5997836A (en) * | 1995-09-01 | 1999-12-07 | Mizusawa Industrial Chemicals, Ltd. | Alkali aluminum complex hydroxide carbonate salt, and a process for producing said salt and its uses |
| US20140329035A1 (en) * | 2011-11-22 | 2014-11-06 | Bridgestone Corporation | Rubber composition for hoses, and hose |
| GB2564546A (en) * | 2017-05-22 | 2019-01-16 | Hughes Electronics Ltd | Cover for RF connections |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462977A (en) * | 1945-03-28 | 1949-03-01 | Western Union Telegraph Co | Cable joint |
| US2827098A (en) * | 1954-10-22 | 1958-03-18 | Goodrich Co B F | Article of manufacture and method for making the same |
| US2864882A (en) * | 1953-07-06 | 1958-12-16 | Minnesota Mining & Mfg | Plastic filler in strip form and electrical connections coated therewith |
| US3271505A (en) * | 1963-09-09 | 1966-09-06 | A T I Ind Inc | Cable splice case |
| US3337681A (en) * | 1964-10-19 | 1967-08-22 | Donald J Smith | Splice case |
| US3514417A (en) * | 1964-10-26 | 1970-05-26 | Mc Donnell Douglas Corp | Ethylene - propylene interpolymer rubber composition comprising a tackifier mixture containing polybutene as one compound and the preparation of tires from said rubber composition |
| US3614298A (en) * | 1970-02-19 | 1971-10-19 | John T Thompson | Cable splice casing with conductive anchorage to cable sheath and shield |
| US3767608A (en) * | 1971-09-09 | 1973-10-23 | Parr Inc | Pressure sensitive cold sealing material |
| US3796823A (en) * | 1972-06-06 | 1974-03-12 | Dexter Corp | Splice case with gas tight seal |
| US4216351A (en) * | 1977-08-26 | 1980-08-05 | Akzona Incorporated | Plastic collar integral with a cable jacket |
-
1981
- 1981-08-21 US US06/295,006 patent/US4376231A/en not_active Expired - Lifetime
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2462977A (en) * | 1945-03-28 | 1949-03-01 | Western Union Telegraph Co | Cable joint |
| US2864882A (en) * | 1953-07-06 | 1958-12-16 | Minnesota Mining & Mfg | Plastic filler in strip form and electrical connections coated therewith |
| US2827098A (en) * | 1954-10-22 | 1958-03-18 | Goodrich Co B F | Article of manufacture and method for making the same |
| US3271505A (en) * | 1963-09-09 | 1966-09-06 | A T I Ind Inc | Cable splice case |
| US3337681A (en) * | 1964-10-19 | 1967-08-22 | Donald J Smith | Splice case |
| US3514417A (en) * | 1964-10-26 | 1970-05-26 | Mc Donnell Douglas Corp | Ethylene - propylene interpolymer rubber composition comprising a tackifier mixture containing polybutene as one compound and the preparation of tires from said rubber composition |
| US3614298A (en) * | 1970-02-19 | 1971-10-19 | John T Thompson | Cable splice casing with conductive anchorage to cable sheath and shield |
| US3767608A (en) * | 1971-09-09 | 1973-10-23 | Parr Inc | Pressure sensitive cold sealing material |
| US3796823A (en) * | 1972-06-06 | 1974-03-12 | Dexter Corp | Splice case with gas tight seal |
| US4216351A (en) * | 1977-08-26 | 1980-08-05 | Akzona Incorporated | Plastic collar integral with a cable jacket |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4538021A (en) * | 1984-04-06 | 1985-08-27 | At&T Bell Laboratories, Inc. | Cable closure having asymmetrical end plate assembly |
| US4558174A (en) * | 1984-04-06 | 1985-12-10 | At&T Bell Laboratories | Cable closure |
| US4647719A (en) * | 1985-06-21 | 1987-03-03 | At&T Technologies, Inc. | Termination closure for buried service cables and methods of installing |
| US5869197A (en) * | 1992-12-16 | 1999-02-09 | Nok Corporation | Acrylic rubber composition |
| US5997836A (en) * | 1995-09-01 | 1999-12-07 | Mizusawa Industrial Chemicals, Ltd. | Alkali aluminum complex hydroxide carbonate salt, and a process for producing said salt and its uses |
| EP0959537A1 (en) * | 1998-05-18 | 1999-11-24 | Andrew A.G. | Weather-proofing method and apparatus for components such as cable connectors |
| US20140329035A1 (en) * | 2011-11-22 | 2014-11-06 | Bridgestone Corporation | Rubber composition for hoses, and hose |
| GB2564546A (en) * | 2017-05-22 | 2019-01-16 | Hughes Electronics Ltd | Cover for RF connections |
| GB2564546B (en) * | 2017-05-22 | 2022-03-09 | Hughes Electronics Ltd | Cover for RF connections |
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